The United States Department of Defense uses National Stock Numbers (NSN) to identify supply materials. The numbering system is used by NATO treaty countries, where they are called NATO Stock Numbers.

Listed below are Lightman® products with NSNs and the corresponding NSN. Select and click a number to link to Defense Supply Center Philadelphia EMALL page. You will then be asked to okay a consent form, log in, and enter the NSN in the Start a Search Box, or you may be asked to fill in the Set Active Properties Box.